A 64 year old man with a 40 pack year smoking history presents for a periodic health visit. He quit smoking 10 years ago. He has no respiratory symptoms. Which of the following best reflects Canadian recommendations for lung cancer screening?AAnnual chest X ray and sputum cytologyBLow dose CT scan every 2 years from age 50 to 80 regardless of smoking historyCNo lung cancer screening is recommendedDAnnual low dose CT for up to three years because he is 55-74 years old with at least a 30 pack year smoking history and quit less than 15 years agoEScreening only if he develops chronic cough or weight lossCheck my answer